StruxureWare Data Center Expert does not support mounting to shares that require NTLMv2 authentication. It may in some situations allow you to successfully “test mount”, but will not authenticate when attempting a backup or when using this share as a remote repository.

Resolution:

Add a backup location that does not require NTLMv2 authentication. Backing up to a local computer and share using the private network interface may be a successful solution.

StruxureWare DCE 7.3.1 and above now has the option to choose NTLM version 2.